I'll take De La Hoya. His jab would bother Mayweather to no end. That Philly shell Floyd uses leaves him wide open for a jab, which was De La Hoya's best punch. Also, Floyd is just too small at 147 to deal with a prime De La Hoya, imo.

De la Hoya beats Floyd 8-4. Oscar was way better then when he fight Floyd at 154. Hatton gave Floyd some problems in the begginning of their fight, but Oscar had an iron chin and would of kept up the attack on Floyd.

Floyd and it would probably be very similar to when they did fight except Oscar would probably be a bit more aggressive following up the jab but that could hurt him just as much as it could help him.

If Oscar could throw a straight right hand with real authority, then he could be a real problem for Floyd. Also he would have done a better job with Quartey if he had that punch which he could have used to counter Quartey's power jab.